Ultrathin wagon-wheel-like [TiO.sub.x] phases on Pt(111): A combined low-energy electron diffraction and scanning tunneling microscopy investigation
Article Abstract:
Ultrathin ordered titanium oxide films on a Pt(111) surface are prepared by reactive deposition and characterized by low-energy electron diffraction and scanning tunneling microscopy. According to the postdeposition annealing condition, three different phases are prepared which show a wagon-wheel-like morphological pattern and two of them can be prepared as single phase (w- and w'-[TiO.sub.x]).
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Complex patterns in a periodically forced surface reaction
Article Abstract:
Effects of time-periodic, spatially uniform forcing on oscillatory chemical turbulence are studied in experiments with catalytic CO oxidation on a platinum (110) single-crystal surface. The observations describe the self-organized behavior of a periodically forced oscillatory reaction-diffusion system in a dynamically rich parameter range where the unforced system exhibits chemical turbulence.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
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Generation of active sites for CO photooxidation on TiO2 by platinum deposition
Article Abstract:
Photocatalytic oxidation of CO to CO2 is carried out with TiO2 and Pt/TiO2 catalysts at room temperature to investigate the effect of Pt deposition. On the basis of diffuse reflectance FTIR spectroscopic studies and CO photodesorption measurements, Pt on TiO2 acted as the active sites on which CO was chemically adsorbed and oxidized to CO2 on photoirradiation in the presence of O2.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
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